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TsAGI Science Journal

ISSN Print: 1948-2590
ISSN Online: 1948-2604

TsAGI Science Journal

DOI: 10.1615/TsAGISciJ.2015015508
pages 395-409

HEURISTIC MODEL OF NONSTEADY LONGITUDINAL AERODYNAMIC CHARACTERISTICS AT HIGH ANGLES OF ATTACK

Petr Viktorivich Kuzmin
Central Aerohydrodynamic Institute (TsAGI), 1 Zhukovsky Str., Zhukovsky, Moscow Region, 140180, Russia
Boris Alekseevich Meleshin
Central Aerohydrodynamic Institute (TsAGI), 1 Zhukovsky Str., Zhukovsky, Moscow Region, 140180, Russia
Yury Fedorovich Shelyukhin
Central Aerohydrodynamic Institute (TsAGI)
Dmitry Valeryevich Shukhovtsov
Central Aerohydrodynamic Institute (TsAGI)

ABSTRACT

Some aspects of the calculations of the longitudinal force and moment acting on a passenger airplane at high angles of attack are considered. A simplified mathematical model describing the hysteresis of aerodynamic characteristics and buffeting at high angles of attack has been developed. The model is based on the data of aerodynamic characteristics identification by the results of regional and medium-range aircraft flight tests at M = 0.3−0.8.
The model is suitable for simulation of the aircraft dynamics at high angles of attack and allows using nonsteady dependences of lift force and pitch moment during real-time calculations in flight simulators.


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